My thanks are extended to Mr. Willis H. Ropes, Salem, Mass., 

 for opportunity to examine a formalin collection of Lysurus borealis 

 containing a number of eggs. In the egg of Lysurus borealis the 

 umbilical plates . extend from the base of the volva to about one-half 

 the circumference, and the markings of these plates are seen on fig. 

 a, which is a photograph, natural size of the base of an egg. The 

 number of plates correspond with the number of arms the specimen 

 will develop. In the very young plants they are attached to the 

 stem, and along the dorsal suture of each arm, or, perhaps, to speak 

 more correctly, the young plants develop from these plates, the 

 attachment being as stated. The arms of Lysurus borealis are wrinkled 

 transversely, excepting on the back of each arm, where there is a 

 longitudinal suture. These sutures might be called umbilical scars, 

 for they correspond with the umbilical scar in the mammal. 



Fig. 510 



Lysurus borealis. 



Photograph, natural size, by Hollis Webster. The specimen on the right has 

 the gleba washed away. 



As an illustration of how errors will get started and persist in 

 mycology, years ago Patouillard published Lysurus Mokusin as 

 having the gleba mass attached to the outside of the arms, and he 

 deduced that Anthurus must have it attached to the inner side of 

 the arms. As a matter of fact, there is little relation between Anthurus 

 and Lysurus; Lysurus has free arms at the base of a columnal stem, 

 and Anthurus consists of a hollow tube, having the limb divided into 

 segments and bearing the gleba on the inner side of the segments. 



513 



